Home / 78,040.57-107,692.26-45,770.78

Finding the Fourth Proportional to 78,040.57, 107,692.26 and 45,770.78

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Solution

The fourth proportional to 78,040.57, 107,692.26 and 45,770.78 is: 63,161.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,040.57 : 107,692.26 = 45,770.78 : x
  2. Step 2: Convert to fraction form
    78,040.57/107,692.26 = 45,770.78/x
  3. Step 3: Cross multiply
    78,040.57x = 107,692.26 × 45,770.78
  4. Step 4: Simplify right side
    78,040.57x = 4,929,158,740.16
  5. Step 5: Solve for x
    x = 4,929,158,740.16/78,040.57
  6. Step 6: Final answer
    x = 63,161.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.